/**
 * Created by stillyuk on 16/6/5.
 */


function a() {

}

var height:number = 2;

class A {
    a:string;
}

class B extends A {

    ab() {
        this.a = '1';
    }
}

class C {
    a:string;
}

var b:B = new B();
b.ab();
console.log(b.a);


